-Each pyruvic acid converted into 2-Carbon acetyl group, remove one molecule of CO2 as a waste product-Each pyruvic acid also loses 2 hydrogen atoms,NAD+ reduced to NADH2 (NADH + H+)--Acetyl group attached to conenzyme A to form acetyl coenzyme A (acetyl CoA)

Krebs cycle

Occurs in matrix of mitochondria; oxidation-reduction reactions transfer chemical energy,in the form of electrons, to two coenzymes(NAD/FAD); pyruvic acid derivatives are oxidized, and the coenzymes are reduced

Electron transport chain

Series of electron carriers in inner mitochondrial membrane reduced and oxidized; exergnic reactions release energy used to form ATP (chemiosmosis); final electron acceptor is O2 to form water

Glycogenesis

formation of glycogen from glucose

Glycogenolysis

breakdown of glycogen to glucose

Gluconeogenesis

production of glucose from non-carbohydrates; stimulated by cortisol and glucagon